// Copyright 2024 RisingWave Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use risingwave_expr::function;

#[function("not(boolean) -> boolean")]
pub fn not(v: bool) -> bool {
    !v
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_not() {
        assert!(!not(true));
        assert!(not(false));
    }
}
